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混氢汽油机排放特性的试验

Keywords: 氢气,汽油,发动机,排放

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Abstract:

在一台加装了电控氢气喷射系统的汽油机上,在发动机1400r/min的条件下,对混氢汽油机排放性能进行了试验研究.试验结果表明:适当增加过量空气系数有利于改善混氢汽油机的HC、CO与NOx排放;在理论过量空气系数附近,混氢后发动机CO排放有所升高,但稀燃条件下混氢有利于改善汽油机HC与CO排放;减小点火角后,混氢汽油机HC与NOx排放有所降低;随着进气压力的升高,HC与CO排放得到明显改善.

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